2017年秋九年级英语全册Unit13We’retryingtosavetheearth第2课时课件.pptx

《2017年秋九年级英语全册Unit13We’retryingtosavetheearth第2课时课件.pptx》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Unit13We’retryingtosavetheearth!SectionA3a—4c九年级英语新目标[人]Haveyoueverseenashark?Whathashappenedtosharks?Thegeneralideaofthearticleisabout.A.waterpollutionB.environmentalprotectiongroupsC.thesharkReadforthegeneralideaof3a.CWheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearH

2、owmuchthenumbersofsomekindsofsharkshavefalleninthelast20to30yearsTwoenvironmentalgroupsagainst“finning”southernChina70millionover90percentWildAidandtheWWFReadthepassageaboutsharksandcompletethefactsheetbelow.Readthepassageagainandfillintheblankswiththewordsinthebox.soalthoughifbutwhen

3、1.Manypeopledonotrealizetheyarekillingawholeshark______theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,____iftheirnumbersdrop,theocean’secosystemwillbeindanger.3.Manythinkthatsharksaretoostrongtobeendangered,_____theyarewrong.4._________therearenoscientificstudiestosupp

4、ortthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday___wedonotdosomethingtostopthesaleofsharkfins.whensobutAlthoughif☆教材解读☆1.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.if引导的是条件状语从句,谓语动词使用一般现在时表示将来,主句使用一般将来时。Ifitdoesn’traintomorrow,wewillgof

5、ishing.如果明天不下雨,我们就去钓鱼。2.Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?◆sofar的意思是“到目前为止”,主句时态使用现在完成时。Sofar,wehavelearnedEnglishforsixyears.到目前为止,我们已经学习英语六年了。◆句中that引导的是宾语从句,作动词shown的宾语。begoodfor的意思是“对……有好处”。Studyshowsthatdoingexerciseeverydayisgoodforourh

6、ealth.研究显示,每天锻炼对我们的健康有好处。Retellthestoryaccordingtothefollowingmindmap.We’retryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth.PresentperfectWeshouldhelpsavethesharks.Modalverb

7、sGrammarFocusFillintheblankswiththecorrectformsoftheverbs.Joe:_____youever______(take)partinanenvironmentalproject?Eric:Yes,Ihave.I______(help)withaClean-UpDaylastyear.Itwas__________(consider)thebiggestclean-upprojectthiscity____ever____(have).Joe:Howmanypeople____(take)part?Eric:I__

8、___(t